Exact result on the Mott transition in a two-dimensional model of strongly correlated electrons

Details Exact result on the Mott transition in a two-dimensional model of strongly correlated electrons Exact result on the Mott transition in a two-dimensional model of strongly correlated electrons

1994-04-07

arxiv.org/abs/cond-mat/9404013v1

Physics

Condensed Matter

7 pages of RevTex, Figures available on request. LPQTH 94/03

Scientific paper

10.1103/PhysRevB.49.14047

We study the properties of a quarter-filled system of electrons on a square lattice interacting through a local repulsion $U$ and a nearest-neighbour repulsion $V$ in the limit $V=+\infty$. We identify the ground-state for $U$ large enough and show that domain walls appear below a critical value $U_c=4t/\pi$. We argue that this corresponds to a metal-insulator transition due to Mott localization.

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